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using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.XR.OpenXR;
using MagicLeap.OpenXR.Features;

public class GlobalDimmerSample : MonoBehaviour
{
    [SerializeField]
    private Slider slider;

    [SerializeField]
    private Text toggleText;

    [SerializeField]
    private Text status;

    private MagicLeapRenderingExtensionsFeature renderFeature;

    private void Start()
    {
        if (!OpenXRRuntime.IsExtensionEnabled("XR_ML_global_dimmer"))
        {
            status.text = $"The OpenXR extension \"XR_ML_global_dimmer\" is not enabled so this example will not function!\n\nYou must enable the OpenXR Feature \"Magic Leap 2 Rendering Extensions\" in Project Settings to use the Global Dimmer.";
            gameObject.SetActive(false);
            return;
        }

        renderFeature = OpenXRSettings.Instance.GetFeature<MagicLeapRenderingExtensionsFeature>();
        renderFeature.GlobalDimmerEnabled = true;

        status.text = $"Global Dimmer Value: {renderFeature.GlobalDimmerValue:P}\n\nGlobal Dimmer Enabled: {renderFeature.GlobalDimmerEnabled}";
        slider.value = renderFeature.GlobalDimmerValue;
    }

    private void OnDestroy()
    {
        if (renderFeature != null)
            renderFeature.GlobalDimmerEnabled = false;
    }

    public void SetDimmerValue(float value)
    {
        if (renderFeature != null)
            renderFeature.GlobalDimmerValue = value;

        status.text = $"Global Dimmer Value: {renderFeature.GlobalDimmerValue:P}\n\nGlobal Dimmer Enabled: {renderFeature.GlobalDimmerEnabled}";
    }

    public void ToggleDimmer()
    {
        renderFeature.GlobalDimmerEnabled = !renderFeature.GlobalDimmerEnabled;
        string val = renderFeature.GlobalDimmerEnabled ? "On" : "Off";
        toggleText.text = $"Dimmer {val}";
        status.text = $"Global Dimmer Value: {renderFeature.GlobalDimmerValue:P}\n\nGlobal Dimmer Enabled: {renderFeature.GlobalDimmerEnabled}";
    }
}